/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.sql.parser.ddl;

import org.apache.flink.sql.parser.SqlParseUtils;
import org.apache.flink.sql.parser.SqlUnparseUtils;

import org.apache.calcite.sql.SqlIdentifier;
import org.apache.calcite.sql.SqlNode;
import org.apache.calcite.sql.SqlNodeList;
import org.apache.calcite.sql.SqlWriter;
import org.apache.calcite.sql.parser.SqlParserPos;
import org.apache.calcite.util.ImmutableNullableList;

import java.util.List;
import java.util.Map;

import static java.util.Objects.requireNonNull;

/**
 * ALTER TABLE [IF EXISTS] [[catalogName.] dataBasesName].tableName SET ( name=value [,
 * name=value]*).
 */
public class SqlAlterTableOptions extends SqlAlterTable {

    private final SqlNodeList propertyList;

    public SqlAlterTableOptions(
            SqlParserPos pos,
            SqlIdentifier tableName,
            SqlNodeList propertyList,
            boolean ifTableExists) {
        this(pos, tableName, null, propertyList, ifTableExists);
    }

    public SqlAlterTableOptions(
            SqlParserPos pos,
            SqlIdentifier tableName,
            SqlNodeList partitionSpec,
            SqlNodeList propertyList) {
        this(pos, tableName, partitionSpec, propertyList, false);
    }

    public SqlAlterTableOptions(
            SqlParserPos pos,
            SqlIdentifier tableName,
            SqlNodeList partitionSpec,
            SqlNodeList propertyList,
            boolean ifTableExists) {
        super(pos, tableName, partitionSpec, ifTableExists);
        this.propertyList = requireNonNull(propertyList, "propertyList should not be null");
    }

    @Override
    public List<SqlNode> getOperandList() {
        return ImmutableNullableList.of(tableIdentifier, propertyList);
    }

    public Map<String, String> getProperties() {
        return SqlParseUtils.extractMap(propertyList);
    }

    @Override
    public void unparseAlterOperation(SqlWriter writer, int leftPrec, int rightPrec) {
        super.unparseAlterOperation(writer, leftPrec, rightPrec);
        SqlUnparseUtils.unparseSetOptions(propertyList, writer, leftPrec, rightPrec);
    }
}
